diff --git a/h-ety-h/boot.rb b/h-ety-h/boot.rb
index 65b8cb2..83e31b4 100644
--- a/h-ety-h/boot.rb
+++ b/h-ety-h/boot.rb
@@ -1,4 +1,3 @@
-require 'ftools'
 require 'hpricot'
 
 module ::HH end
diff --git a/h-ety-h/init.rb b/h-ety-h/init.rb
index bfcac20..707685d 100644
--- a/h-ety-h/init.rb
+++ b/h-ety-h/init.rb
@@ -28,7 +28,7 @@
 end
 
 HH::DOWNLOADS = File.join(HH::USER, 'Downloads')
-File.makedirs(HH::DOWNLOADS)
+FileUtils.makedirs(HH::DOWNLOADS)
 HH::DB = HH::Sequel::SQLite::Database.new(:database => File.join(HH::USER, "+TABLES"))
 HH::DB.extend HH::DbMixin
 HH::DB.init
diff --git a/h-ety-h/sequel/database.rb b/h-ety-h/sequel/database.rb
index f286138..fb6ba01 100644
--- a/h-ety-h/sequel/database.rb
+++ b/h-ety-h/sequel/database.rb
@@ -40,7 +40,7 @@ def <<(sql)
     # overriden in database adapters.
     def literal(v)
       case v
-      when String: "'%s'" % v
+      when String then "'%s'" % v
       else v.to_s
       end
     end
diff --git a/h-ety-h/sequel/dataset.rb b/h-ety-h/sequel/dataset.rb
index 6992ec1..ca653ab 100644
--- a/h-ety-h/sequel/dataset.rb
+++ b/h-ety-h/sequel/dataset.rb
@@ -73,13 +73,13 @@ def qualified_field_name(field, table)
     # Converts a field list into a comma seperated string of field names.
     def field_list(fields)
       case fields
-      when Array:
+      when Array then
         if fields.empty?
           WILDCARD
         else
           fields.map {|i| field_name(i)}.join(COMMA_SEPARATOR)
         end
-      when Symbol:
+      when Symbol then
         fields.to_field_name
       else
         fields
@@ -89,7 +89,7 @@ def field_list(fields)
     # Converts an array of sources into a comma separated list.
     def source_list(source)
       case source
-      when Array: source.join(COMMA_SEPARATOR)
+      when Array then source.join(COMMA_SEPARATOR)
       else source
       end 
     end
@@ -111,9 +111,9 @@ def where_equal_condition(left, right)
     # Formats a where clause.
     def where_list(where)
       case where
-      when Hash:
+      when Hash then
         where.map {|kv| where_equal_condition(kv[0], kv[1])}.join(AND_SEPARATOR)
-      when Array:
+      when Array then
         fmt = where.shift
         fmt.gsub('?') {|i| literal(where.shift)}
       else
diff --git a/h-ety-h/sequel/schema.rb b/h-ety-h/sequel/schema.rb
index c2e6ad3..88b8288 100644
--- a/h-ety-h/sequel/schema.rb
+++ b/h-ety-h/sequel/schema.rb
@@ -21,10 +21,10 @@ class Schema
     
     def self.on_delete_action(action)
       case action
-      when :restrict: RESTRICT
-      when :cascade: CASCADE
-      when :set_null: SET_NULL
-      when :set_default: SET_DEFAULT
+      when restrict then RESTRICT
+      when cascade then CASCADE
+      when set_null then SET_NULL
+      when set_default then SET_DEFAULT
       else NO_ACTION
       end
     end